Constrictive band

ABSTRACT

A constrictive band includes a band body and a positioning member. The band body has a free end inserted through an insert hole of the positioning member and fixed at any location of the band body relative to said positioning member by means of a band fixing unit of the positioning member, forming a circle to constrict and hold something therein tightly and immovably. The band body can be easily handled to be inserted through the inert hole, and pulled out of the insert hole simply by compressing plate members of the positioning member for loosening the band body, permitting the constrictive band usable repeatedly for a long time.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to a constrictive band, particularly to one easyto handle and possible to be used repeatedly.

2. Description of the Prior Art

Conventional constrictive bands are widely used in our daily life forconstricting things stably, often used for positioning tubes or bindinglinear matters to be stored.

A Taiwan patent of No. 285970 disclosed “Constrictive Band”, anotherTaiwan patent disclosed “Constrictive Band used in a Constrictive Gun”,and another Taiwan patent disclosed “Stationary Line constrictive band”.However, those three articles are not so ideally structured, needingimprovement for its handling and usable durability.

SUMMARY OF THE INVENTION

This invention has been devised to offer a constrictive band easilyhandled for constricting something in a circle formed by theconstrictive band and possible to be used repeatedly for a long time.

The features of the invention are a band body and a positioning memberdetachably combined together. The band body is elongate and flat,provided with ratchet teeth on one or two longitudinal sides. Thepositioning member is an empty block and combined integral with one endof the band body, having a center insert hole for the band body toinsert though and a band fixing unit respectively formed on an innerwall of two longitudinal sides. The band fixing unit is composed of twoplate members, two elastic strips extending along two inner sides of theinsert hole, a ring pushing and keeping the elastic strips positioned inplace, an anti-retreat claw formed on an inner surface of the elasticstrips to engage with the ratchet teeth for fixing the band body stablyand immovable at one of many locations relative to the positioningmember for forming a circle of various sizes to constrict somethingtightly therein.

BRIEF DESCRIPTION OF DRAWINGS

This invention will be better understood by referring to theaccompanying drawings, wherein:

FIG. 1 is a perspective view of a constrictive band in the presentinvention

FIGS. 2A and 2B are side views of the constrictive band in bent usingconditions in the present invention;

FIGS. 3A, 3B and 3C are elevation views of a positioning member in theconstrictive band in the present invention;

FIGS. 4A and 4B are respectively a cross-sectional view of a line A-Aand a line B-B in FIG. 2;

FIG. 5 is a cross-sectional view of a line C-C in FIG. 3C;

FIG. 6 is a cross-sectional view of the constrictive band in a loosenedcondition in the present invention;

FIG. 7 is a perspective view of the constrictive band provided with aband positioning unit at one side of a positioning member in the presentinvention

FIG. 8 is a cross-sectional view of the band positioning unit at oneside of the positioning unit loosened in the present invention; and,

FIG. 9 is a perspective view of a plurality of the constrictive bandscombined together in the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

A constrictive band 1 in the present invention, as shown in FIG. 1,includes a band body 11 and a positioning member 12 as main components.

The band body 11 is a long flat strip, having a plurality of ratchetteeth 111 formed on one or two longitudinal sides, and a free end with aguide (tapered) angle 112 for easy inserting.

The positioning member 12 is an empty mass, having a through insert hole120 in its center and a band fixing unit 121 respectively formed in aninner wall of the two longitudinal sides, and a reinforcing rib 124formed on the surface of the longitudinal side for strengthening acombining point where the end of the band body 11 is combined integralwith the positioning member.

Next, as shown in FIGS. 3A, 3B, 3C, 4A, 4B, and 5, in using, the bandbody 12 is inserted through the through insert hole 120 of thepositioning member 12 and then kept tight and immovable at a neededlength by means of the two fixing units 121 so that the band body 11 mayform a circle in order to constrict something in the circle tightly andimmovable.

Each fixing unit 121 is composed of a plate member 1211, an elasticstrip 1213, a ring 1214, and an anti-retreat stopper 1215. Further, agroove 1212 is formed at two sides of the insert hole 120 in the platemember 1212, located lengthwise and parallel to each other. The elasticstrip 1213 is elongate and located to extend along the insert hole 120from the bottom of an inner wall of the plate member 1211 out of theinsert hole of the positioning member 12. The ring 1214 is located inthe insert hole 120, of the positioning member 12, pushing and keepingthe elastic strips 1213 in place. The anti-retreat claw 1215 projectsinward from the inner surface of each elastic strip 1213, engaging withthe ratchet teeth 111 of the band body 11 after the band body 11 isinserted through the insert hole 120 so that the band body 11 can onlymove in, but cannot retreat by means of function of the anti-retreatclaw 1215. Thus the band body 11 is impossible to loosen off thepositioning member 12 after inserted and positioned therein.

Furthermore, an auxiliary horizontal positioning block 122 can be addedat an upper side and a lower side in the insert hole 120, and a verticalpositioning block 123 can be added at the right and the left side in theinsert hole 120 to limit the band body 11 to move in the special spacesurrounded by the two horizontal blocks 122 and the two vertical blocks123 in the insert hole 120 of the positioning member 12, so that theband body 11 may not loosen, bias or wrongly be positioned in the inserthole 120.

Next, FIG. 6 shows the band body 11 is loosened in the positioningmember 12, with the plate members 1211 pressed inward to force the ring1214 to bend down, so that the elastic strip 1213 may curve down,Therefore, the ant-retreat claw 111 disengages from the ratchet teeth111, permitting the band body 11 to retreat out of the insert hole 120,freeing the band body 11.

When the band body 11 in a constricted condition is to be loosened fromthe positioning member 12, as shown in FIGS. 7 and 8, the two platemembers 1211 are compressed inward, and then the ring 1214 is bentinward so that the elastic strips 1213 may be pushed outward to forcethe claws 1215 to disengage from the ratchet teeth 111. Therefore, theband body 11 can be pulled completely out of the positioned member 12via the insert hole 120, freeing the band by 11.

In addition, a plurality of the constrictive bands 1 can be connectedtogether as shown in FIG. 9, by means of the band body 11 of a firstconstrictive band 1 inserted in the positioning member 12 of a secondconstrictive band 1, the band body 11 of the second constrictive band 1inserted in the positioning member 12 of a third constrictive band 1,and the band body 1 of the third constrictive band 1 inserted in thepositioning member 12 of the first constrictive band 1. Thus a circleformed by the three band bodies 11 can receive something therein forconstricting it tightly and immovable.

This invention has the following advantages, as can be seen from theforesaid description.

1. Easy constriction and loosening of the band body: as the band bodyhas the ratchet teeth and the positioning member has the band fixingunits, the band body is easily inserted through the insert hole and keptstably and immovable by engagement of the ratchet teeth with the bandfixing units at one of many locations; when the constricted band body isto be loosened off, only compressing the plate members can disengage theclaws of the band fixing units from the ratchet teeth to permit the bandbody to be pulled and freed out of the positioning member, veryconvenient to use.

2. Repeatable use: This constrictive band can be used many times for along time, by the band body possible to be assembled with anddisassembled from the positioning members.

While the invention has been described above, it will be recognized andunderstood that various modifications may be made therein and theappended claims are intended to cover all such modifications that mayfall within the spirit and scope of the invention.

1. A constrictive band comprising: A band body shaped as a long and flatstrip and having ratchet teeth fully on two longitudinal sides; Apositioning member shaped as an empty block, tightly and integrallycombined with one end of said band body, having an insert hole throughits center portion and a band fixing unit respectively at two innersides; Said band fixing unit composed of a flexible plate member formedat an upper side and a lower side of said insert hole, an elastic stripformed to extend from a bottom of two sides of said insert holerespectively and out of an upper side of said insert hole, a ringpositioned in said insert hole for pushing and keeping said two elasticstrips in position, an anti-retreat claw formed on an inner surface ofsaid elastic strip for engaging with said ratchet teeth so as to keepsaid band body in place at one of many locations relative to saidpositioning member.
 2. The constrictive band as claimed in claim 1,wherein said ratchet teeth are provided on only one longitudinal side ofsaid band body.
 3. The constrictive band as claimed in claim 1, whereinsaid band body has a free end formed with a guide tapered angle.
 4. Theconstrictive band as claimed in claim 1, wherein said band fixing unitis provided only at one longitudinal side of said band body.
 5. Theconstrictive band as claimed in claim 1, wherein said positioning memberis provided with a reinforcing rib on an outer surface at a connectingpoint of one end of said band body and said positioning member.
 6. Theconstrictive band as claimed in claim 1, wherein two symmetricalhorizontal blocks are provided in an inner wall of said insert hole ofsaid positioning member.
 7. The constrictive band as claimed in claim 1,wherein two symmetrical vertical blocks are provided in an inner wall ofsaid insert hole of said positioning member.